The LP4PCIEX8ADP 6-inch LP4 to 8-Pin PCI Express Power Adaptor converts a standard LP4 power connector on your existing power supply to an 8-pin PCI Express video card power connector, allowing you to install a PCIe graphics card without having to upgrade the computer power supply. Eliminates the need to upgrade your power supply with an 8-Pin power connector for PCI-Express Video Cards. Easy to use and install. Backed by StarTech.com lifetime warranty. Powering a PCI Express video card with an older power supply that doesn't feature a PCIe power connection.